P2RY13 and Behcet disease: Downregulated genes include C3, P2RY12, P2RY13, CSF1R, CX3CR1, TMEM119, ITGAM, ITGAX, OLFML3. A cross‐disorder analysis demonstrated that expression changes of these microglia‐specific genes are correlated between SCZ and ASD or BD (Figure 4a).